Not too sure where you are but the markets are selling sheep. The problem is if you came to me wanting to buy some, what would I sell you? The ewes can't go as they are feeding the lambs, the lambs can't go as they are being fed still by their mums and if I sell you the lot, I've lost my breeding stock / not had chance to see which lambs are looking good to keep.
I think your timings just a bit off - I do it all the time.